Narrative:

On vectored approach to den ILS runway 35L; we intercepted the localizer outside of cruup (19.8 DME) at 10000 ft assigned. Approach control told us to maintain 10000 ft until cruup. Between cruup and chola (16.6 DME); we experienced wake turbulence and asked approach what type of aircraft we were following. Approach told us it was an A320 and asked us to slow to 160 KTS then 150 KTS. We noticed that the A320 was about 4.5 mi ahead on TCAS. We then asked the controller what speed the airbus was doing. He responded 'your speed is good.' we then intercepted the glide path and continued the approach. The captain called for gear down and flaps 28 degrees for landing. Our landing weight was 127000 pounds and tower reported winds at 100 degrees at 6 KTS. We broke out of a thin deck at approximately 1000 ft AGL. At about 100 ft above the runway; the captain and I detected a sink rate and the captain applied thrust to arrest the sink. The aircraft continued to sink in the flare and made a very firm touchdown with no bounce. We taxied normally to the gate and upon arrival; requested maintenance to check the aircraft for a hard landing. During my postflt inspection; maintenance and I noticed damage to the tailskid plate and some scraped drain tubes.

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Original NASA ASRS Text

Title: MD80 FLT CREW ENCOUNTERS WAKE TURB DURING FINAL APCH; HAS EXCESSIVE SINK RATE AT TOUCHDOWN CAUSING A TAIL STRIKE.

Narrative: ON VECTORED APCH TO DEN ILS RWY 35L; WE INTERCEPTED THE LOC OUTSIDE OF CRUUP (19.8 DME) AT 10000 FT ASSIGNED. APCH CTL TOLD US TO MAINTAIN 10000 FT UNTIL CRUUP. BTWN CRUUP AND CHOLA (16.6 DME); WE EXPERIENCED WAKE TURB AND ASKED APCH WHAT TYPE OF ACFT WE WERE FOLLOWING. APCH TOLD US IT WAS AN A320 AND ASKED US TO SLOW TO 160 KTS THEN 150 KTS. WE NOTICED THAT THE A320 WAS ABOUT 4.5 MI AHEAD ON TCAS. WE THEN ASKED THE CTLR WHAT SPD THE AIRBUS WAS DOING. HE RESPONDED 'YOUR SPD IS GOOD.' WE THEN INTERCEPTED THE GLIDE PATH AND CONTINUED THE APCH. THE CAPT CALLED FOR GEAR DOWN AND FLAPS 28 DEGS FOR LNDG. OUR LNDG WT WAS 127000 LBS AND TWR RPTED WINDS AT 100 DEGS AT 6 KTS. WE BROKE OUT OF A THIN DECK AT APPROX 1000 FT AGL. AT ABOUT 100 FT ABOVE THE RWY; THE CAPT AND I DETECTED A SINK RATE AND THE CAPT APPLIED THRUST TO ARREST THE SINK. THE ACFT CONTINUED TO SINK IN THE FLARE AND MADE A VERY FIRM TOUCHDOWN WITH NO BOUNCE. WE TAXIED NORMALLY TO THE GATE AND UPON ARR; REQUESTED MAINT TO CHK THE ACFT FOR A HARD LNDG. DURING MY POSTFLT INSPECTION; MAINT AND I NOTICED DAMAGE TO THE TAILSKID PLATE AND SOME SCRAPED DRAIN TUBES.

Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.